<template>
    <div>
        <!-- 面包屑导航区 -->
        <el-breadcrumb separator="/">
            <el-breadcrumb-item :to="{ path: '/Breadcrumb' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item >商品管理</el-breadcrumb-item>
            <el-breadcrumb-item>商品列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 卡片视图 -->
        <el-card>
            <el-row :gutter="20">
                <el-col :span="7">
                    <el-input placeholder="请输入内容" 
                        v-model="queryInfo.query" clearable
                        @clear="getGoodsList()">
                        <el-button slot="append" 
                            icon="el-icon-search"
                            @click="getGoodsList()">
                        </el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">                        
                    <el-button type="primary" @click="goAddpage">
                        添加商品
                    </el-button>
                    </el-col>
            </el-row>
            <!-- table表格区 -->
            <el-table :data="goodslist" border stripe>
                <el-table-column type="index" label="序号"></el-table-column>
                <el-table-column label="商品名称" prop="goods_name">
                </el-table-column>       
                <el-table-column label="商品价格(元)" prop="goods_price" width="105px">
                </el-table-column>      
                <el-table-column label="商品重量" prop="goods_weight" width="80px">
                </el-table-column>      
                <el-table-column label="创建时间" prop="add_time" width="160px">
                    <template slot-scope="scope">
                        {{scope.row.add_time | dataFormat}}
                    </template>
                </el-table-column>    
                <el-table-column label="操作" width="190px">
                    <template slot-scope="scope">
                        <el-button type="primary" icon="el-icon-edit" size="mini"
                        @click="editById(scope.row.goods_id)">
                            编辑
                        </el-button>
                        <el-button type="danger" icon="el-icon-delete" size="mini"
                        @click="removeById(scope.row.goods_id)">
                            删除
                        </el-button>
                    </template>
                </el-table-column>             

            </el-table>

            <!-- 分页区 -->
            <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum"
                :page-sizes="[10, 20, 30, 40,50]"
                :page-size="queryInfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total" background>
            </el-pagination>
        </el-card>
    </div>
</template>
<script>
export default {
    data() {
        return {
            //查询参数对象
            queryInfo:{
                query : '',
                pagenum : 1,
                pagesize : 10
            },
            //总数据条数
            total : 0,
            //商品列表
            goodslist : []
        }
    },
    created() {
        this.getGoodsList()
    },
    methods: {
        async getGoodsList(){
            const { data : res} = await this.$http.get('goods'
                ,{ params : this.queryInfo })
            if( res.meta.status !== 200 ){
                return this.$message.error('获取商品列表失败！')
            }
            this.$message.success('获取商品列表成功！')
            console.log(res.data)
            this.goodslist = res.data.goods
            this.total = res.data.total
        },
        handleSizeChange(newSize){
            this.queryInfo.pagesize = newSize
            this.getGoodsList()
        },
        handleCurrentChange(newPage){
            this.queryInfo.pagenum = newPage
            this.getGoodsList()
        },
        async removeById(id){
            const confirmResult = await 
                this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
                    confirmButtonText: '确定',
                    cancelButtonText: '取消',
                    type: 'warning'
                }).catch(err => err)
            if(confirmResult !== 'confirm'){
                return this.$message.info('已取消删除!')
            }
            const {data : res} = await this.$http.delete(`goods/${id}`)
            if(res.meta.status !== 200){
                return this.$message.error('删除失败！')
            }
            this.$message.success('删除成功！')
            this.getGoodsList()
        },
        //跳转到添加商品页面
        goAddpage(){
            this.$router.push('/goods/add')
        },
        editById(goods_id){
            //将goods_id保存在sessionStorage中
            window.sessionStorage.setItem('goods_id',goods_id)
            //跳转到编辑页面
            this.$router.push('/goods/edit')
        }
    },
}   
</script>
<style lang="less" scoped>

</style>